<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<style>
    #logins {
        width: 500px;
        height: 300px;
        background-color: powderblue;
        margin: auto;
        text-align: center;
    }
</style>

<body>

    <form action="doLogin" method="post" id="logins">
        <h3>{{title}}</h3>

        账号： <input type="text" name="username"><br>
        密码：<input type="password" name="password"><br>
        <input type="submit" value="登录">
    </form>

</body>

</html>